The value of \[\left( \frac{1}{15}+\frac{1}{35}+\frac{1}{63}+\frac{1}{99}+\frac{1}{143}+\frac{1}{195}+\frac{1}{255}+\frac{2}{323}+\frac{1}{399} \right)\]= ?

• A.  \[\frac{2}{7}\]                         
• B.  \[\frac{6}{7}\]               
• C.  \[\frac{8}{7}\]                         
• D.  \[\frac{1}{7}\]